CN105508082B - It is pressurized No leakage electromagnetic control type fuel gas ejecting device - Google Patents
It is pressurized No leakage electromagnetic control type fuel gas ejecting device Download PDFInfo
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- CN105508082B CN105508082B CN201510853734.9A CN201510853734A CN105508082B CN 105508082 B CN105508082 B CN 105508082B CN 201510853734 A CN201510853734 A CN 201510853734A CN 105508082 B CN105508082 B CN 105508082B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
Abstract
The purpose of the present invention is to provide supercharging No leakage electromagnetic control type fuel gas ejecting devices, including compression portion, control section, nozzle segment and injection apparatus shell.Building pressure using high pressure oil in control chamber makes needle-valve lift, response quickly, and the control of jet amount is accurate；The oily draining oil circuit of control flows through electromagnetic valve body top, plays cooling effect, improves the stability of electromagnetic valve work；Combustion gas is pressurized using charged piston, combustion gas supercharging and fuel gas injection process is separately controlled using two solenoid valves, jet process can flexibly switch between supercharging or no charge mode, pressurization is anxious after first delaying, variable jet rule can be achieved, meet requirement of the Different Work Condition of Engine to fuel gas injection pressure；Compression portion prevents pumping chamber's gas leakage using long sealing couple and big oil pocket, and seal band is designed between needle-valve and needle-valve pedestal, and introducing portion control oil makees sealing oil seal combustion gas, prevents gas leakage in needle chamber.
Description
Technical field
The present invention relates to a kind of engines, the specifically fuel gas ejecting device of dual fuel engine.
Background technology
As constantly consuming for fossil fuel is increasingly strict with engine exhaust regulation, the development of engine is faced with energy
The dual-pressure of source crisis and problem of environmental pollution is to solve energy problem and problem of environmental pollution simultaneously using alternative fuel
Effective means.The advantages that natural gas, oil gas etc. is resourceful with its, cheap, combustion cleaning, big calorific value, becomes current
The main substitute fuel of internal combustion engine.
Current in-cylinder direct-jet gas injection system mainly controls needle-valve piston by the high-speed electromagnetic valve being internally integrated
Movement may be implemented quantitatively to control fuel gas injection timing, jet, have good to realize the open and close of fuel gas injection valve
Good effects of energy saving and emission reduction, but it there are problems that：First, in order to improve oil, gas mixability in engine cylinder, jet dress
It sets and fuel gas injection pressure requirements is continuously improved, compare liquid fuel, combustion gas is pressurized according to high-pressure pump, is filled from pump end to injection
Set transmission process to pipeline configuration, intensity requirement is higher and gas leakage is serious；Second, with the movement of needle-valve, combustion gas is along needle
Valve coupling gap leaks upwards, and leakage combustion gas, which enters control chamber, causes fuel gas injection pressure and injection rate to reduce, and seriously affects
Air-jet device job stability.
Invention content
The purpose of the present invention is to provide can be achieved to fuel gas injection amount, jet Time Precise Controlling, jet process can be
Switch between supercharging or non pressurized both of which, to reach the supercharging No leakage electromagnetic control type combustion gas of the adjustable purpose of whiff pressure
Injection apparatus.
The object of the present invention is achieved like this：
The present invention is pressurized No leakage electromagnetic control type fuel gas ejecting device, it is characterized in that：Including compression portion, control section
And nozzle segment；
The compression portion includes boost electromagnetic valve, intake valve, charged piston set, charged piston；The boost electromagnetic valve
Including electromagnetic valve body, solenoid valve valve rod, baffle, solenoid valve seat, solenoid valve armature, supercharging coil, supercharging electromagnet, solenoid valve rank
Iron setting supercharging electromagnet by, be pressurized electromagnet in winding supercharging coil, solenoid valve valve rod one end by be pressurized locating snap ring with
Solenoid valve armature is fixed, and the other end runs through solenoid valve seat, and the rear held herein is fixed with baffle, and electricity is cased on solenoid valve valve rod
The both ends of magnet valve spring, magnetic valve spring are withstood on respectively on solenoid valve seat and solenoid valve valve rod, and charged piston puts on end installation
In solenoid valve seat, charged piston be mounted on charged piston set in, charged piston upper end, charged piston set and solenoid valve seat it
Between formed servo oil pocket, charged piston lower end and charged piston set between form pumping chamber, be cased with charged piston on charged piston
The both ends of spring, charged piston spring are withstood on respectively between the lower section of charged piston upper end and charged piston set；Intake valve includes
Inlet valve spindle, inlet valve spring, inlet valve seat, intake valve big spring seat, intake valve little spring seat, inlet valve seat are fixed on increasing
It presses in piston bush, intake valve big spring seat and intake valve little spring seat are respectively positioned in inlet valve seat, and intake valve big spring seat will be into
The inner cavity of air valve seat is separated into left chamber and right chamber, and the head of air inlet valve lever is pressed on the outer wall of inlet valve seat, the tail of air inlet valve lever
Portion stretches into inlet valve seat and is connected with check valve little spring seat across intake valve big spring seat, intake valve resetting spring be located at into
It between air valve big spring seat and intake valve little spring seat and is placed on air inlet valve lever, air inlet, air inlet is opened up in charged piston set
Mouth is communicated with inlet valve seat left chamber, is communicated with pumping chamber on the outside of air inlet valve lever head；
The control section includes conical surface seal seat under conical surface seal receptacle, valve rod on control solenoid valve, valve rod；It is described
It includes control electromagnet, control coil, control armature, control valve rod, application valve body, application valve body, valve to control solenoid valve
Conical surface seal seat sets gradually and is installed in injection apparatus body from top to bottom under conical surface seal receptacle and valve rod on bar, injection dress
Body upper end is set in charged piston set, control electromagnet is mounted in application valve body, and control coil is wrapped in control electricity
On magnet, control armature is located at below control electromagnet, and control valve rod one end is mutually fixed by controlling locating snap ring with control armature,
The other end is through conical surface seal receptacle on valve rod and stretches under valve rod in conical surface seal seat, controls and is provided with sealed taper on valve rod
Face and lower sealing cone, upper sealing cone are matched with conical surface sealed base on valve rod, and lower sealing cone and the conical surface under valve rod are close
Back cover seat matches, and controls and low pressure oil annulus is arranged on valve rod above upper sealing cone, and control valve rod upper-lower seal is set below face
It sets high pressure oil annulus, drain tap is set on valve rod in conical surface sealed base, high-pressure oil passage is set in conical surface seal pedestal under valve rod
Entrance, low pressure oil annulus are connected to drain tap, and high pressure oil annulus is connected to high-pressure oil passage entrance, control and are cased with control spring on valve rod,
The both ends of control spring are withstood on control valve rod and valve rod respectively between conical surface sealed base；
The nozzle segment includes needle-valve, needle-valve resetting spring, needle-valve pedestal, and needle-valve pedestal is fixed under injection apparatus body
Side, needle-valve upper end stretch under valve rod in conical surface seal pedestal, and needle-valve lower end is located in needle-valve pedestal, and circle is arranged on needle-valve
Ring-shaped step is located at the part below annular step on needle-valve and forms control chamber between injection apparatus body, is located on needle-valve
Part above annular step is cased with needle-valve resetting spring, and needle chamber and sealing ring are respectively formed between needle-valve and needle-valve pedestal
Band, the setting gas inlet passage communicated with needle chamber and the oil input channel communicated with seal band, gas inlet in needle-valve pedestal
Road passes through conical surface seal pedestal under injection apparatus body, valve rod, conical surface sealed base on valve rod, is communicated with pumping chamber, oil input channel is worn
Overspray apparatus body is communicated with the high-pressure oil passage entrance in conical surface seal pedestal under valve rod.
The present invention can also include：
1, it is provided with annular oily band on the solenoid valve valve rod, servo oil oil input channel and servo oil are provided on solenoid valve seat
Draining road, when solenoid valve valve rod is withstood on baffle, annular oil band is communicated with servo oil draining road and servo oil pocket, solenoid valve valve rod
After being moved to the left with solenoid valve armature, annular oil band is communicated with servo oil oil input channel and servo oil pocket.
Advantage of the invention is that：The supercharging No leakage electromagnetic control type fuel gas ejecting device of the present invention uses dual-coil electromagnetic valve
Jet process is controlled, a solenoid valve control combustion gas supercharging, a solenoid valve control fuel gas injection, control chamber is interior to use high compression ignition
Oil builds pressure, and by the oil inlet of solenoid valve control high pressure fuel, draining to control the lifting of needle-valve, take a seat, fuel gas injection response is fast,
The control of jet amount is accurate；Combustion gas is pressurized using charged piston, pressurization is anxious after first delaying, and can be in supercharging or non pressurized
Flexibly switch between pattern, can realize variable jet rule, effectively improve the economy of engine power performance and fuel；Solenoid valve
Body is designed with cooling oil path, and cooling oil path is connected to control chamber, heat is taken away to reduce solenoid valve by oil inlet, draining oil circulation
Portion temperature ensure that the reliability and stability of electromagnetic valve work；Seal band, introducing portion are provided between needle-valve and needle seating
Sub-control liquefaction can be effectively prevented gas leakage, while at the control oil and needle-valve in control chamber as sealing oil seal combustion gas
Seal Oil use same oil, oil pressure is equal, can be effectively ensured that control oil, Seal Oil is without static leakage；Charged piston and increasing
Gas leakage is prevented using long band and big oil pocket between pressure piston bush couple, improves the stability of air-jet device work.
Description of the drawings
Fig. 1 is the structural diagram of the present invention；
Fig. 2 a are compression portion structural schematic diagram of the present invention, and Fig. 2 b are the structure that the oily band of annular is communicated with servo oil draining road
Schematic diagram, Fig. 2 c are the structural schematic diagram that the oily band of annular is communicated with servo oil oil input channel；
Fig. 3 a are control section structural schematic diagram of the present invention, and Fig. 3 b are upper sealing cone and conical surface sealed base point on valve rod
The schematic diagram opened, Fig. 3 c are upper sealing cone and the schematic diagram that conical surface sealed base is bonded on valve rod；
Fig. 4 is nozzle segment structural schematic diagram.
Specific implementation mode
It illustrates below in conjunction with the accompanying drawings and the present invention is described in more detail：
In conjunction with Fig. 1~4, supercharging No leakage electromagnetic control type fuel gas ejecting device of the invention is mainly by compression portion 1, control
Part 2, nozzle segment 3 and injection apparatus body 4 processed form.Compression portion 1 includes mainly boost electromagnetic valve I, intake valve II, supercharging
Piston bush 19, charged piston 20, solenoid valve seat 21 etc..Wherein, annular oily band 7, electromagnetism are designed on the valve rod 8 of boost electromagnetic valve
Servo oil oil input channel 28, servo oil draining road 5 are designed on valve seat 21.When boost electromagnetic valve is not powered on, the annular oil connection of band 7 is let out
Oil duct 5 and servo oil pocket 22；When boost electromagnetic valve is powered, annular oil band 7 is connected to oil input channel 28 and servo oil pocket 22.Intake valve is
Check valve, when combustion gas enters intake valve, valve rod 15 is opened under combustion gas effect, and combustion gas enters pumping chamber 18；Work as charged piston
20 downlinks, when gaseous-pressure increases in pumping chamber 18, intake valve is closed.Control section 2 mainly include control solenoid valve III,
Conical surface seal seat 37, control chamber 40 etc. under conical surface seal receptacle 35, valve rod on valve rod.Wherein, the valve rod 32 of solenoid valve is controlled
Upper design is upper sealing cone 45 respectively, lower sealing cone 44, is located at upper sealing there are two sealing cone and two Sheng oil ring bands
The low pressure oil annulus 46 of 45 top of the conical surface and the high pressure oil annulus 43 positioned at 44 lower section of lower sealing cone, low pressure oil annulus 46 pass through
Oil duct is connected to drain tap 33, and high pressure oil annulus 43 is connected to by oil duct with high-pressure oil passage entrance 36.Control solenoid valve not
When energization, solenoid valve valve rod 32 is taken a seat, and lower sealing cone 44 closes high pressure oil annulus 43, and upper sealing cone 45 is opened, control chamber
40 are connected to drain tap 33；When controlling solenoid valve energization, solenoid valve valve rod 32 lifts, and upper sealing cone 45 closes low pressure oil
Annulus 46, lower sealing cone 44 are opened, and high pressure oil enters control chamber 40.Nozzle segment mainly include needle-valve 39, seal band 53,
Nozzle cage 54, needle-valve pedestal 55, needle chamber 57 etc..It is designed with annular step on needle-valve 39, below annular step, needle-valve
Control chamber 40 is formed between 39 and injection apparatus body 4.Needle chamber 57 is formed between needle-valve 39 and needle-valve pedestal 55, in needle chamber 57
Top is designed with seal band 53 between needle-valve 39 and needle-valve pedestal 55, seal band is arrived by oil duct introducing portion control oil
53 sealing combustion gas.
The supercharging No leakage electromagnetic control type fuel gas ejecting device of the present invention is mainly by compression portion 1, control section 2, spray
Mouth point 3 and injection apparatus shell 4 form.There are high voltage control oil-in 36 and drain tap 33 on injection apparatus shell 4.
Compression portion 1 is located at 4 top of injection apparatus body, and the two is using threaded connection.Compression portion 1 includes mainly supercharging electricity
Magnet valve I, intake valve II, charged piston spring 11, charged piston set 19, charged piston 20, solenoid valve seat 21 etc..Wherein, it is pressurized
Solenoid valve is by magnetic valve spring 6, solenoid valve valve rod 8, spring washer 9, baffle 10, solenoid valve seat 21, armature 23, electromagnetic valve body
24, the compositions such as locating snap ring 25, coil 26, electromagnet 27.Intake valve includes mainly inlet valve seat 14, inlet valve spindle 15, air inlet
Valve spring 16 etc..Increase and be designed with annular oily band 7 on the valve rod 8 of solenoid valve, be designed on solenoid valve seat 21 servo oil oil input channel 28,
Servo oil draining road 5.8 one end of solenoid valve valve rod is fixed on by locating snap ring 25 on solenoid valve armature 23, can be with armature 23 1
Side-to-side movement is played, the other end runs through solenoid valve seat 21, is pressed on baffle 10 under the action of 6 pretightning force of magnetic valve spring.Electromagnetism
Valve seat 21 can play position-limiting action to the lift of electromagnetism valve rod 8, and be designed with oil duct thereon, being capable of leader servo oil stream warp
Boost electromagnetic valve plays the role of cooling solenoid valve and reduces the shock and vibration of 8 side-to-side movement of solenoid valve armature 23 and valve rod.
Servo oil pocket 22 is formed above 20 major part of charged piston between compression face and piston bush 19, solenoid valve seat 21, charged piston 20 is small
Pumping chamber 18 is formed between head lower section compression face and piston bush 19.Intake valve is check valve, and 16 pretightning force of resetting spring is smaller,
Opening pressure is low, and when combustion gas enters intake valve, valve rod 15 is opened under combustion gas effect, and combustion gas enters pumping chamber 18；Work as supercharging
20 downlink of piston, when gaseous-pressure increases in pumping chamber 18, intake valve is closed.Charged piston 20 and charged piston set 19 are a pair
Precision pair, fit clearance is small and contact length is big, can effectively prevent and is altered in the combustion gas in pumping chamber 18, and prevents servo oil pocket
Fuel leakage in 22；A big cavity 12 is formed between 20 major part of charged piston and the groove of piston bush 19, even if there is part
Combustion gas, fuel leakage enter cavity 12, it can be hindered further to interpenetrate in intracavitary oil, gas mixing, 20 surface of charged piston
The oil film of formation is in dynamic balance state during piston motion, can further prevent gas leakage.
Control section 2 is located among injection apparatus body 4, and each section is fixed using positioning pin.Control section 2 includes mainly control
Conical surface seal seat 37, control chamber 40 etc. under conical surface seal receptacle 35, valve rod on solenoid valve III processed, valve rod.Wherein, jet is controlled
Solenoid valve includes mainly electromagnet 29, coil 30, armature 31, solenoid valve valve rod 32, magnetic valve spring 34, locating snap ring 48, electromagnetism
Valve body 49 etc..Coil 30 and electromagnet 29 are mounted in electromagnetic valve body 49, and armature 31 is located at 29 lower section of electromagnet.Solenoid valve valve rod
Design is upper sealing cone 45, lower sealing cone 44 respectively, positioned at upper close there are two sealing cone and two Sheng oil ring bands on 32
The low pressure oil annulus 46 of 45 top of the conical surface and the high pressure oil annulus 43 positioned at 44 lower section of lower sealing cone are sealed, low pressure oil annulus 46 is logical
Oil channel is connected to drain tap 33, and high pressure oil annulus 43 is connected to by oil duct with high-pressure oil passage entrance 36.Solenoid valve valve rod 32 1
End is fixed on by locating snap ring 48 on solenoid valve armature 31, can be moved with armature 31, and the other end runs through solenoid valve armature
Conical surface sealed base 35 on the valve rod of 31 lower sections, is pressed in conical surface seal bottom under valve rod under the action of 34 pretightning force of magnetic valve spring
On seat 37.Magnetic valve spring 34 is fixed on solenoid valve valve rod 32 and valve rod between conical surface sealed base 35, is stuck in valve rod epicone
In the groove of face sealed base 35, conical surface sealed base 35 can also play the position-limiting action to 32 lift of valve rod on valve rod.Valve rod
It is designed with oil duct on upper sealed base 35, the fuel oil at low pressure oil annulus 25 can be guided to flow through control solenoid valve, is flowed to
Low pressure drain tap 33 takes away heat, cooling electromagnetic valve body under fuel flow effect, and reduces the up and down motion of solenoid valve armature 31
Shock and vibration, to improve the stability of electromagnetic valve work.A plurality of oil duct is designed under valve rod on conical surface seal pedestal 37
And air flue, it is respectively used to connection high pressure oil annulus 43 and control oil-in 36, fluid is guided into control chamber 32, part is controlled into oil
It guides seal band 53 into, combustion gas is introduced into needle chamber 57.
Nozzle segment 3 is located at 4 lower section of injection apparatus body, and the two is using threaded connection.Nozzle segment includes needle-valve 39, spring
Washer 38, needle-valve resetting spring 41, spring base 42, sealing ring 50, seal band 53, nozzle cage 54, needle-valve pedestal 55, needle chamber
57 etc..It is designed with annular step on needle-valve 39, below annular step, forms control between needle-valve 39 and injection apparatus body 4
Chamber 40 processed.Needle-valve 39 is pushed in the preload force effect of needle valve spring 41 on needle-valve pedestal 55, needle-valve 39 and needle-valve pedestal 55 it
Between formed needle chamber 57 seal band 53 is designed between needle-valve 39 and needle-valve pedestal 55 above needle chamber 57.Nozzle cage 54
It is designed with sealing ring 50 between injection apparatus body 4, prevents the combustion gas of cylinder high temperature, high pressure from entering in injection apparatus.Needle-valve bottom
55 sides of seat are provided with gas inlet passage 58, annular air inlet duct 59, and high-pressure gas is introduced needle chamber 57, with meet air-jet device into
Gas requirement；The other side is provided with annular oil-feed tank 51, oil input channel 52, and part, which is controlled oil, introduces seal band 53.The spray of the present invention
Injection device sprays combustion gas, and what is introduced at needle chamber 57 is combustion gas, and combustion is easy to happen during the work of needle-valve 39 lifts and takes a seat
Gas moves upward leakage with needle-valve 39, when the combustion gas of leakage enters control chamber 40, since the compressibility of combustion gas can seriously affect
The jet characteristic of fuel gas ejecting device.In order to solve the problems, such as this, fuel gas ejecting device needle-valve 39 of the invention and needle-valve pedestal 55
Between be provided with seal band 53, introduce control oil seal combustion gas, gas leakage can be effectively prevented.In addition, in control chamber 40
The oily Seal Oil in seal band 53 of control uses same oil, and oil pressure is equal up and down for needle-valve, and it is oily, close that control can be effectively ensured
Oil sealing is without static leakage.
When engine works, control unit acquires the input signal of sensor, driving boost electromagnetic valve, control jet electromagnetism
Valve works, and to control combustion gas supercharging in pumping chamber 18 respectively, air inlet and control chamber 32 build pressure, pressure release.Work as boost electromagnetic valve
When power-off, solenoid valve valve rod 8 is withstood under the action of magnetic valve spring 6 on right-hand apron 10, at this point, the annular oil connection of band 7 is let out
Oil duct 5 and servo oil pocket 22, as shown in Fig. 2 (b), servo oil stream is pressed to low pressure drain tap, servo oil pocket 22 in servo oil pocket 22
Power reduces, uplink under the action of resetting spring 11 of charged piston 20, and gaseous-pressure declines in pumping chamber 18, the open-top air inlet of combustion gas
Valve valve rod 15 starts air inlet；Increase solenoid valves when, electromagnet 27 attract armature 23, armature 23 with moving electromagnetic valve valve rod 8 to the left
Movement, at this point, annular oil band 7 is connected to oil input channel 28 and servo oil pocket 22, as shown in Fig. 2 (c), servo oil enters servo oil pocket
22,22 pressure rise of servo oil pocket pushes 20 downlink of charged piston, and pressure just starts to increase in pumping chamber 18, and intake valve closes
It closes, charged piston 20, which continues traveling downwardly, is pressurized combustion gas in pumping chamber 18.Combustion gas enters needle chamber 57 by air flue in pumping chamber 18.
When controlling solenoid valve power-off, solenoid valve valve rod 32 is under the action of magnetic valve spring 34 in state of taking a seat, lower sealed taper
High pressure oil annulus 43 is closed in face 44, and upper sealing cone 45 is opened, and as shown in Fig. 3 (b), high-pressure oil passage turns off at this time, control chamber 40
It is connected to drain tap 33, pressure is low in control chamber 40, and needle-valve 39 is pressed under the action of needle valve spring 41 on needle seating 55, closes
Spray orifice 56, injection apparatus not jet；When controlling solenoid valve energization, electromagnet 29 attracts armature 31, armature 31 to drive electromagnetism
Valve valve rod 32 lifts, and upper sealing cone 45 closes low pressure oil annulus 46, and lower sealing cone 44 is opened, as shown in Fig. 3 (c), at this time
Low pressure oil way turns off, and control chamber 40 is connected to high-pressure oil passage, and high pressure oil enters the circular ring shape platform that control chamber 40 acts on needle-valve 39
On rank, needle-valve 39, which lifts rapidly, opens spray orifice 56, and injection apparatus starts jet.
By the above-mentioned course of work it is found that the jet process of supercharging No leakage electromagnetic control type fuel gas ejecting device is by double electromagnetism
Valve controls, and has response quickly, the characteristics of being accurately controlled to jet amount.According to control signal, the power-off of compression portion solenoid valve, combustion
Gas is not pressurized, and when solenoid valves, combustion gas is pressurized, and injection pressure improves, it can be achieved that combustion gas supercharging or no charge mode are appointed
Meaning switching, spray characteristic is flexibly adjustable, can meet requirement of the Different Work Condition of Engine to fuel gas injection pressure.Compression portion uses
The long band of couple, which increases oil pocket, prevents gas leakage, nozzle segment that can be effectively prevented combustion gas using fuel sealing combustion gas and let out
Leakage, in addition, control oil and Seal Oil can effectively prevent the fuel oil static leakage of control chamber and seal band using same oil.Cause
This, the present invention can make engine meet increasingly strict emission regulation demands, effectively improve its dynamic property, economy and can
By property.
Claims (2)
1. it is pressurized No leakage electromagnetic control type fuel gas ejecting device, it is characterized in that：Including compression portion, control section and spray nozzle part
Point；
The compression portion includes boost electromagnetic valve, intake valve, charged piston set, charged piston；The boost electromagnetic valve includes
Electromagnetic valve body, solenoid valve valve rod, baffle, solenoid valve seat, solenoid valve armature, supercharging coil, supercharging electromagnet, solenoid valve armature are set
It sets by supercharging electromagnet, is pressurized winding supercharging coil in electromagnet, solenoid valve valve rod one end is by being pressurized locating snap ring and electromagnetism
Valve armature is fixed, and the other end runs through solenoid valve seat, and the rear held herein is fixed with baffle, and solenoid valve is cased on solenoid valve valve rod
The both ends of spring, magnetic valve spring are withstood on respectively on solenoid valve seat and solenoid valve valve rod, and charged piston puts on end and is mounted on electricity
In magnet valve seat, charged piston is mounted in charged piston set, shape between charged piston upper end, charged piston set and solenoid valve seat
At servo oil pocket, pumping chamber is formed between charged piston lower end and charged piston set, charged piston spring is cased on charged piston,
The both ends of charged piston spring are withstood on respectively between the lower section of charged piston upper end and charged piston set；Intake valve includes intake valve
Valve rod, inlet valve spring, inlet valve seat, intake valve big spring seat, intake valve little spring seat, inlet valve seat are fixed on charged piston
In set, intake valve big spring seat and intake valve little spring seat are respectively positioned in inlet valve seat, and intake valve big spring seat is by inlet valve seat
Inner cavity be separated into left chamber and right chamber, the head of air inlet valve lever is pressed on the outer wall of inlet valve seat, and the tail portion of air inlet valve lever is stretched into
It is connected with check valve little spring seat in inlet valve seat and across intake valve big spring seat, it is big that intake valve resetting spring is located at intake valve
Between spring base and intake valve little spring seat and be placed on air inlet valve lever, air inlet opened up in charged piston set, air inlet with into
Air valve seat left chamber communicates, and is communicated with pumping chamber on the outside of air inlet valve lever head；
The control section includes conical surface seal seat under conical surface seal receptacle, valve rod on control solenoid valve, valve rod；The control
Solenoid valve includes control electromagnet, control coil, controls armature, control valve rod, application valve body, on application valve body, valve rod
Conical surface seal seat sets gradually and is installed in injection apparatus body from top to bottom under conical surface seal seat and valve rod, injection apparatus body
Upper end is mounted in charged piston set, and control electromagnet is mounted in application valve body, and control coil is wrapped in control electromagnet
On, control armature is located at below control electromagnet, and control valve rod one end is mutually fixed by controlling locating snap ring with control armature, another
End conical surface seal receptacle and stretches under valve rod in conical surface seal seat on the valve rod, control be provided on valve rod sealing cone and
Lower sealing cone, upper sealing cone are matched with conical surface sealed base on valve rod, lower sealing cone and conical surface seal bottom under valve rod
Seat matches, and controls and low pressure oil annulus is arranged on valve rod above upper sealing cone, and setting is high below control valve rod upper-lower seal face
Pressure oil annulus, is arranged drain tap on valve rod in conical surface sealed base, high-pressure oil passage entrance is arranged in conical surface seal pedestal under valve rod,
Low pressure oil annulus is connected to drain tap, and high pressure oil annulus is connected to high-pressure oil passage entrance, controls and is cased with control spring on valve rod, controls bullet
The both ends of spring are withstood on control valve rod and valve rod respectively between conical surface sealed base；
The nozzle segment includes needle-valve, needle-valve resetting spring, needle-valve pedestal, and needle-valve pedestal is fixed below injection apparatus body,
Needle-valve upper end stretches under valve rod in conical surface seal pedestal, and needle-valve lower end is located in needle-valve pedestal, and annulus is arranged on needle-valve
Shape step is located at the part below annular step on needle-valve and forms control chamber between injection apparatus body, is located at circle on needle-valve
Part above ring-shaped step is cased with needle-valve resetting spring, and needle chamber and sealing ring are respectively formed between needle-valve and needle-valve pedestal
Band, the setting gas inlet passage communicated with needle chamber and the oil input channel communicated with seal band, gas inlet in needle-valve pedestal
Road passes through conical surface seal pedestal under injection apparatus body, valve rod, conical surface sealed base on valve rod, is communicated with pumping chamber, oil input channel is worn
Overspray apparatus body is communicated with the high-pressure oil passage entrance in conical surface seal pedestal under valve rod.
2. supercharging No leakage electromagnetic control type fuel gas ejecting device according to claim 1, it is characterized in that：The solenoid valve
It is provided with annular oily band on valve rod, servo oil oil input channel and servo oil draining road, solenoid valve valve rod top are provided on solenoid valve seat
When on baffle, annular oil band is communicated with servo oil draining road and servo oil pocket, and solenoid valve valve rod is with solenoid valve armature to moving to left
After dynamic, annular oil band is communicated with servo oil oil input channel and servo oil pocket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510853734.9A CN105508082B (en) | 2015-11-27 | 2015-11-27 | It is pressurized No leakage electromagnetic control type fuel gas ejecting device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510853734.9A CN105508082B (en) | 2015-11-27 | 2015-11-27 | It is pressurized No leakage electromagnetic control type fuel gas ejecting device |
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| CN105508082A CN105508082A (en) | 2016-04-20 |
| CN105508082B true CN105508082B (en) | 2018-07-24 |
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Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3263884B8 (en) * | 2016-06-30 | 2019-12-18 | CPT Group GmbH | Injection valve with a magnetic ring element |
| DE102017207276B4 (en) * | 2017-04-28 | 2019-01-24 | Mtu Friedrichshafen Gmbh | Gas injection valve for injecting a fuel gas into an internal combustion engine, internal combustion engine with such a gas injection valve, and method for operating such an internal combustion engine |
| CN107091358B (en) * | 2017-06-28 | 2023-07-25 | 哈尔滨工程大学 | Parallel gas injection valve with floating valve seat |
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